Fjords are glacial valleys drowned when post-ice-age seas rose
A classic fjord is a deep, steep-walled inlet where the ocean flooded a U-shaped valley once excavated by a glacier — salt water filling a mountain trough carved by ice.
Sills of bedrock or moraine often shallow the mouth, while inland basins plunge hundreds of meters. Fresh meltwater can layer over dense salt water, creating stark fjord stratification.
Coasts keep glacier fingerprints. Fjords turn mountain carving into marine wonder: natural harbors, towering walls, and living proof that ice and rising seas rewrote shorelines together.
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